A manner of speaking that combines the words to the point that syllables are being excluded as the words are SLURRED together. This term originated in the 1930's. Appalachian speakers as well as East Coast speakers are known to speak fluent Slurvian. It may be the common string that holds all the accents of the east together. It can also be found in Chicago.
His family in Kentucky speaks fluent Slurvian! They were all: "Widen ya tell me y'alls were comin'? I've been diiiiine to meetcha new wife!"
Any day when it has been decided that good times will be had, most likely involving some form of intoxication.
In order for a day to properly be referred to as Slursday, the customary Slursday declaration must be made, as such;
"Happy Slursday!"
From then on, said day will be remembered as Slursday, and good times will be had by all.
"Ayyo, we bout to go pop some bottles, and have ourselves a Happy Slursday!"